Details
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Bug
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Resolution: Fixed
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High
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1.6.2, 1.7.2, 1.8.1, 1.9.0
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None
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Mac OSX 10.12.4 (16E195)
Firefox 52.0.2
Chrome 57.0.2987.133
Opera 44.0.2510.1218
Safari 10.1 (12603.1.30.0.34)
Description
If use File FieldType without a max file size restriction, it's impossible to upload a binary file larger than 500mb (exact size depends on browser).
It happens because PlatformUI tries to convert the file into base64 and file size exceeds max blob size.
Chrome & Opera:
Shows information about uploaded file. After click on Publish returns error message: An error occurred while publishing the draft
Firefox:
Nothing happens on UI. An error message is visible in the console. See attachment.
Safari:
Browser crashes 
. If a draft was not saved before, all data from other fields will be lost.
Furthermore, a response from API contains an incorrect error message - problem isn't related with MimeType. MimeType can not be recognized because nothing was send to backend.
{"ErrorMessage":{"_media-type":"application\/vnd.ez.api.ErrorMessage+json","errorCode":500,"errorMessage":"Internal Server Error","errorDescription":"An exception occurred while executing 'INSERT INTO `ezbinaryfile` (`contentobject_attribute_id`, `filename`, `mime_type`, `original_filename`, `version`, `download_count`) VALUES (:placeholder1, :placeholder2, :placeholder3, :placeholder4, :placeholder5, :placeholder6)' with params [\"491\", false, null, \"rtmp.mov\", 1, 0]:\n\nSQLSTATE[23000]: Integrity constraint violation: 1048 Column 'mime_type' cannot be null","Previous":{"_media-type":"application\/vnd.ez.api.ErrorMessage+json","ErrorMessage":{"_media-type":"application\/vnd.ez.api.ErrorMessage+json","errorCode":500,"errorMessage":"Internal Server Error","errorDescription":"SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'mime_type' cannot be null","Previous":{"_media-type":"application\/vnd.ez.api.ErrorMessage+json","ErrorMessage":{"_media-type":"application\/vnd.ez.api.ErrorMessage+json","errorCode":500,"errorMessage":"Internal Server Error","errorDescription":"SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'mime_type' cannot be null"}}}}}}
Update: Even if blob size limit isn't exceeded, then it is not possible to save binary file which is bigger than PHP memory_limit value.
Every binary file is converted to a string using base64, then it goes to the PlatformUI controller which handles it this way:
https://github.com/ezsystems/PlatformUIBundle/blob/master/Controller/Rest/ContentController.php#L137
and finally, Symfony ends-up trying to do `file_get_contents` and assign the value to the property what is not possible due to lack of memory:
https://github.com/symfony/symfony/blob/2.8/src/Symfony/Component/HttpFoundation/Request.php#L1526
